Plahoxnuxh c co



W. C. BUCKNAM.

GAS CUTTING APPARATUS.

APPucmou man Aumza. ma.

Patented Oct. 14, 1919.

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W. C. BUCKNAM. GAS CUTTING APPARATUS. amlcmon mw v6.2.2, Isls.

Patented vom. 14,1919.

3 SHEETS-SHEET 2.

H m W W Anonnfr W. C. BUCKNAM.

GAS CUTTING APPARATUS.

APPLlcAnon min AuG.23. 19in.

Patented Oct. 14, 1919.

3 SHEETS-SHEET 3.

ml oDLUMBIA PLANMAON co., WASHEIIMKJN. n. c,

Enron Ww? Hnomfr NEW JERSEY, ASSIGNOB TO DAVIS-BOUBNON- N. Y., ACORPORATION 0F NEW YORK.

WORTHY C. BUCKINAJII, 0F JERSEY UITY, VILLE COMPANY, 0F NEW YORK,

eAeoUTTING APPARATUS.

Specification of Letters Patent.

1,318,725. Patented Oct. 14, 1919.

Application led August 23, 1918. Serial No. 251,061.

in horizontal section and an intermediate portion of the radius-rodbroken out;

Fig. 2 is a front elevation; and

Fig. 3 1s a view partly in side elevation and partly 'in vertlcalsection, and with the shield partly broken away. The carriage comprises'a platform 1 hav ing three or more vert-ical wheels, two Wheels 2 and 3in line at one side and a Wheel 4 at the other side opposite the forwardwheel 2 being suiiicient. As in my former latent the rear wheel 3 is acaster wheel, t e pintle of which may be lixed or freed at will byturning the hand screw 5. This carriage will travel directly upon theWork, or upon a track, or upon any other underlying surface or support.

Means including a motor and a speed reducing gearing are mounted on thecarriage for driving it at appropriate uniform speed as the cultprogresses. As in the patent aforesaid the nature oflthe motor may bevaried, but I prefer to employ'an electric motor 6. This motorie Aearedto one or more of the rollin 'snpports, preferably to the two front whees'2'and 3, and means are provided for varying the speed of travel of thecarriage, and consequently the rate of advance of the out, withexactitude. This .is importantf because lunder any particular set ofconditions, thatis to say, thlckness of metal, nature and size of jets,etc., there is a fairly deinite rate at which the jets shouldbepropelled in orderto secure the best results, 'andfbeyondjor belo'vvwhich inferior cutting 'or Tn all whom t may concern:

Be it known that I, WoRTHY C. BUCKNAM, a citizen of the United States,and a resident of J erse City, in the county 4of Hudson and State ofyNew Jerse have invented a new and useful Gas-Cuttlng Apparatus, of whichthe following is a specification. This invention is an improvement uponand Within my prior Patent No. 1,118,183, dated November 24, 1914covering a portable self-contained and self-propelled apparatus adaptedto beset down to travel slowly upon the surface of the Work or otherbase, in order to feed heating and cutting jets at selected uniformspeed and distance over the metal, for either straight or circularcutting. The device therein disclosed comprises asmall torch-bearingcarriage havingthree or more rollingsupports with variable` speeddriving means, and a laterally projectin radiusrod 'and center, wherebythe straig t-traveling carriage can bev caused to describe .circlesr bybringlng thecenter lnto contact with the work: or baseand elevating thewheel or Wheels-at .thatsida The purpose of the present mproyements isteenable ythe device to out a f'substantial range of circles, includingthoseof small diameter, vvhile always support-ing, the torchV -outwardly from the marriage,V in a position which will not cause injury tothe carriage by the heat of the azne, or the -n iolten oxid. In; myformer patent the torch could be swung from its outboard position to alocation between -thilont ,vlees/1S `lilltlnoiv v'refer to Is hitfthe'center ,inward f of the entire failuras Welleswastage ronizfpfbhe-,carriagefor .smell @im es, While 0f use will' leaving"thejet-delivering, Ineens .cuitsidel the rspeclfic'fmeans' which' Iillustrated to This ma advantaglly -acomplished vary and hold the lspeedat `any ydesired by enten' ling, the radius-redlacross the front, n a4subes?,ntial ,range consists of and,.,by, meuntiiigtllewheeltwhieh-is,at the e ,f rletlonjhrlre which Acan be adlusted toside remote. from thetoreh, as well as ,the absorb more or less of theenergy of the recenter, removably oii,=th isv1,0d, so that the volvingarmature. Thls exceedingly eentelcanjbe .laced aimerions points eithersimple and suiiiciently effective, but I Yhave outsideltlie vv eelorfinvvardly of itsA vosifound that a variable speed tionLfIn addition,means are provide for of close adJu-stment, interposed betweenthedisplacing the,` jet-delivering means .recti motor and the driving wliees, is somewhat linearly toward and trolnfit's sideotthe carmoreset1sfactory, tand YI have accordingly riage, morder to sup lement the1raizigezoi? indlcatedsueh amgearing, though I do not, Crsles Permittedby. @wallie @f the Center .end false i t0 enable the amantes,whiletraveling .straghthto change its line oicnti,v a' i In,.tl 1 eaccompanying dravving i11ustrat-- ma-tlmli1f1vv1l-1iiee:iA v i vFigure 1vis a plan View, with the torch value withi strumentality. 5 ,g i

The motor is planted en -,top form with4 its armatureshat 7 disposedtransversely and provided'vvith a pair of spur gears 8 andi);ofdili'erent sizes, which may be set to mesh selectively with a pair ofof the platresult. `In'the earlier patentgearing, capable ofcourse,lgimitmyselfhto either form of in- V g misma;

f gi'nls i() anni 1l on the portion of ai Sintft i?, which projectsoutsidcn casing 15;. 'Phu lnttmcontains u cono of gem-s 14 of clusclygi'iuhiziioil sims and substantial number on in Shaft i5. The shaft l2bears n Wiiiiri 16 iiisido thinl casing, meshing with n Worm-Wheei i7which is rotatable ,about the shaft 15 mili unimi with :i goin 18,whihtnieshes with :i gi-iii' if) on n` coiintoisliiit 20. li @our 21siiihilily spiinoii to thi,` shaft :intl Shiftabie by :i hziniih 2z md5fbeLhrougifit iii f'o ohgii ciinvni with :my onoI of tho dono oi' i.ThnhI :i 4snhftiinti:il aiiifge Spe'cis, difring slightly ono fromanotiiii'; is prov 'L e n l* :uni further variation 'nitty vs* i monosof the gegi'rs, 9 il?, Mii `A pair i y in a v ,.n oi huw] kgms 2.5,fixeLi to. a s eve 2 ,sittiria carriage having three or more rollinsupports adapted to travel on the su ace of the Work or other bese andvariab1espeed driving means geared thereto, and a radiusrod with movablecenter projecting beyond the side of the carriage away from the torch,characterized by the center being positionable either outwardly fromsaid side or between the front wheel positions.

2. A portable, self-contained mechanically-driven gas-cutting apparatusfor proelling heating and cutting jets in various irections at selecteduniform speed and distance over the work, the same comprising a smallself-supporting carriage having three or more rolling supports adaptedto travel on the surface of the work or other base and variable-speeddriving means geared thereto, jet-delivering` means supported at oneside of the carnage, and a radius-rod with center projecting beyond theother side thereof, characterized yby the radius-rod extending freelyacross the front of the carand having one of the front wheels as we l asthe center removably mounted thereaus oints,eit'her beyond sai ensotthattlls center can Vbe laced at variwheel, or inviva ly of itsposition toward the jet-delivering means.

3. A portable, self-contained, mechanically-driven gas-cutting apparatusfor pro- [Selling heating and cutting jets in various directions atselected uniform speed and distance over the work, the same comprising asmall self-supporting torch-bearing carringe having three or morerolling supports adapted to travel on the surface of the work or otherbase and variable-speed driving Ymeans geared thereto, and a radius-rodwith movable center projecting beyond the side f the carriage awa fromthe torch, characterized by means or rectilinearly displacing the torchlaterally for olfset cutting and to supplement the range of circlesafforded by the movability of the center, said means comprising an armprojecting at the side `away from the radius-rod, and a slide movablelongitudinally of said arm by a screw and wheel and carrying a torchholder.

WORTHY C. BUCKNAM.

00111 of this patent may be obtained ter me cents each, by addrening the"commissioner o! Patents, Wilmington, D. 0."

